-- but hopes the young man will soon be able to answer the question of why >> i and i think all the law enforcement professionals are hoping for a host of reasons that the suspect survives because we have a million questions. those questions need to be answered. a justice dept source says dzhokar will will face federal terrorism charges and may also face state murder charges -- adding that he could be charged before he leaves the hospital. in boston i'm stacey cohan reporting. >> federal agents confirm that the f-b-i interviewed the older brother, tamerlan tsarnaev in 2011, after being tipped off by a foreign government. the suspect identified himself as ethnic chechen from southern russia and officials there believed tamerlan was going to travel to the country's region to join unspecified underground groups. the fbi says it interviewed tsarnaev and relatives, and did not find any domestic or foreign terrorism activity. meanwhile, tsarnaev's uncle says he had a falling-out with the 26-year-old over his increased commitment to islam. boston cardinal sean o'malley is dedicating mass today